【摘要】 通过对中分纬度概念的深入研究，给出一套地球椭球体上中分纬度（ ）和航迹计算的精确算式，进而给出其解算的工程数模，为高精度船舶自动化导航的发展提供理论模型。更多还原

【Abstract】 Through studying on the conception of the middle latitude,this paper gives a set of accurate formulas of middle latitude and track calculation based on the ellipsoidal model of the earth,and provides a theoretical model for the development of accurate automatic navigation.更多还原